Journalist, author, espionage historian,
and former KGB operative. Notebooks, file guide, concordance, legal documents, and notes
compiled by Vassiliev from KGB files relating to KGB espionage activity in the United
States during the 1930s through the early 1950s. Digital files include material relating
to VENONA, the code name for the U.S. Army's Signal Intelligence Service's project to
analyze and decrypt Soviet communications primarily during World War II.